Eccentric for operating sliver rubbing devices



J. HUGHES ECCENTRIC FOR OPERATING SLIVER RUBBING DEVICES Jan. 12, 1937.

Filed July 28, 1934 By Ms Fri-0mm:-

Patente Jan. 12, 1937 ECC'ENTREC FUR OPERATING SLIVER RUBBING DEVICESJohn Hughes, Rochdale, England Application July 28,

1934, Serial No. 737,368

in Great Britain July 29, 1933 1 Claim.

This invention of improvements in gilling machines and drawing machinesfor the treatment of fibrous material relates to gilling machines andworsted draw frames for preparing fibrous material for spinning or othertreatment or use.

This invention consists in mechanism which is provided for use inimparting a reciprocating motion to and providing for adjustment of theextent of the reciprocation of reciprocating rubbing devices; namely,rubbing leathers or rollers or like devices in an intersecting gill boxwith upper and lower sets of falls-rs or a gill box with a single set offallers or a worsted draw frame and comprises two sets of eccentricsprovided respectively for working two eccentric or connecting rods andcomprising in each set two eccentrics for co-operation, applied and madeadjustable one around or upon another and secured to revolve together indiiferent positions of adjustment so that in effect in revolution theeccentricity or radius of one may be added to or made wholly or in partto counteract or to be subtracted from that or" the other in thetransmission of motion to the corresponding eccentric rod or connectingrod. With this mechanism the reciprocatory movement imparted to arubbing leather or roller or like device may be easily adjusted withinany requisite limits between a maximum and a minimum or between amaximum and no movement.

This mechanism in comparison with cranks hitherto used for impartingreciprocating motion to rubbing leathers or rollers in a gill box orWorsted draw frame is advantageous in being more easily adjusted, inaffording a greater range of adjustment of the extent of reciprocation,in being safer, in being neater in construction, in working moresmoothly and with less noise in action, in presenting larger bearingsurfaces and comprising fewer parts liable to wear and in being cheaperto manufacture.

Fig. l of the drawing is a vertical section partly in side elevationshowing two sets of eccentrics and rods and other parts used inconnection therewith for imparting a reciprocating motion to andproviding for the adjustment of the extent of the reciprocation ofrubbing leathers or like devices in a gill box or worsted draw frame.Fig. 2 is partly a plan of the parts shown in Fig. l and partly asection taken on the plane indicated by the line II-II of Fig. 1. Fig. 3is mainly a horizontal section and partly a plan taken on the planeindicated by the line TIL-II of Fig. 1 and partly a plan showing partsin a position different from that in which they are shown in Figs. 1 and2. Fig. e is mainly another horizontal section taken on the planeindicated by the line II-II of Fig. 1 and showing parts in a differentposition and is in part a plan.

The same characters of reference indicate corresponding parts in thedifferent figures.

In mechanism provided according to the invention and shown in thedrawing, a shaft I. provided to be revolved in a convenient part of themachine, portions of bearing parts 2, 3 for the shaft 1 being indicated,is provided with a block A adjustable around it and formed withoppositely directed eccentrics 5, 6 equal in eccentricity on the facesto be the upper and lower in use. Around the eccentrics 5, 6 formed onthe block 6 are mounted other eccentrics I, 8 respectively disposedoppositely in relation to one another, equal to them ineccentricity, andthe block 4 formed with two eccentrics 5, 6 is formed with holes 9 sothat it may be easily turned about the shaft 5. In the case illustrated,the eccentrics 5, B are secured in position around the shaft I by meansof set-screws I0, I I respectively which being provided with washers i2,I3 respectively are made to pass through radial slots hi, I5 in faceplates IE, II respectively. The face plates I5, I? are applied adjacentto opposite ends of the block Q and the eccentrics l, 8 respectively andare disposed so that the radial slot I4 of the one is directedoppositely to that of the other and are secured against movement aroundthe shaft I by means of keys or splines I8, I9 respectively and againstmovement lengthwise thereof by set-screws I6, ll respectively which arescrewed into the face plates I6, I! respectively and made to engage theshaft. When the set-screws II], II are slackened, the block 1 can beturned around the shaft I and relatively to the eccentrics I, 8 so thatthe eccentricities of the eccentrics 5, 6 on the block 4 may be made toco-operate to the full with those of the external eccentrics l, 8 asshown in Figs. 1 and 2 or completely to neutralize them as shown in Fig.4 or so that the resultant eccentricity may be made as is indicated inFig. 3 of any extent within the limit of full co-operation or completeneutralization, the radial slots I4, I5 allowing for inward and outwardmovement of the set-screws I9, II. When the set-screws II], II aretightened after adjustment of the block 4 around the shaft I and withinthe eccentrics 1, 8, the eccentrics T, 8 being secured by the splines orkeys I8, I9 and set-screws II), II against turning around the shaft I,serve to compel the block 4 to turn with them on the turning of theshaft 5. Around the outer eccentrics l, 8 respectively are appliedeccentric straps or enclosing parts 20, 2| formed with parts 22, 23 ofeccentric rods which are formed with right-hand screwthreads 24, 25. tobe engaged with corresponding right-hand screw-threads in sleeves 26, 2?respectively also formed with left-hand screwthreads to be screwed uponother parts 28, 29 of the eccentric rods respectively which are formedwith left-hand screw-threads 35, 3! and are connected in any appropriatemanner with the shafts or other parts to be reciprocated, for example asin the case illustrated by gudgeon pins 32, 33 secured in forkedattachment parts 34, 35 respectively, the gudgeon pin 32 being shown asemployed with a bush 36, shown only in part, applied around one end.Lock nuts 24', 25, 28' and 29 on the parts 24, 25, 28 and 29 areprovided for use in securing the sleeves 26 and 2! to which they arerespectively adjacent.

What I do claim as my invention and desire to secure by Letters Patentis:

In an eccentric mechanism for operating sliver rubbing devices, a rotaryshaft, an integral block mounted on said shaft and formed with a collarengageable by means for eifecting angular adjustment of said block onsaid shaft, and also formed with two equal and opposite inner eccen-,

trics extending from opposite faces of said collar, two outer eccentricsembracing said inner eccentrics, said outer eccentrics being of equaleccentricity to said inner eccentrics, two: eccentric straps surroundingsaid outer eccentrics respectively and integral with parts of eccentricrods for transmitting reciprocating movements to the rubbing devices,two plates applied to said shaft, one at each end of said block, saidplates being splined to said shaft, and each formed with a radial slot,said slots extending oppositely from the axis of said shaft, means forsecuring said plates to said shaft for adjustment lengthwise of saidshaft, and two headed set-screws penetrating said slots and threadedinto said outer eccentrics, the heads of said set-screws bearing on saidplates in the operative condition of said mechanism and being adapted tobe freed from said plates by slackening said set-screws to permitangular adjustment of said block relatively to said shaft to any chosenpoint within an angular range of 360 and corresponding radial movementof said outer eccentrics relatively to said shaft to effect equal andsimultaneous variation of the eccentricity of said outer eccentrics.

JOHN HUGHES.

